To case or not to case?

I have a used Casetronic mini ITX-2677R case that I am using for a Epia M10000. I need help deciding if I should keep the case or ditch it. I like the case alot but it won't fit where I planned to put it (glove box). Also the case is too big to house my Opus Power supply so I would have to mod it to get the power cables inside. I could do this and put the case in the trunk (will subs mess with this?) or I can ditch the case and put the computer behind the screen in the front. What do you all think?